Unhook the Genesis default title function and replace it with your own title-building function

functions.php

<?php
// Paste the code BELOW this line into your child theme functions.

/**
 * Unhook the Genesis default title function and replace it with your own title-building function
 * 
 * @author Reasons to Use Genesis
 * @link http://reasonstousegenesis.com/genesis-default-title/
 */
remove_filter( 'wp_title', 'genesis_default_title', 10, 3 );
add_filter( 'wp_title', 'rtug_sample_title_function', 10, 3 );
function rtug_sample_title_function( $title, $sep, $seplocation ) {

	if ( 'right' === $seplocation )
		return $title . ' ' . $sep . ' ' . get_bloginfo( 'name' );
	else
		return get_bloginfo( 'name' ) . ' ' . $sep . ' ' . $title;

}